.icon {
    width: 1em;
    height: 1em;
    vertical-align: -0.15em;
    fill: currentColor;
    overflow: hidden;
    font-size: large;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100vh;
    overflow: hidden;
}

.el-container {
    height: 100vh;
}
.el-aside {
    height: 100vh;
}
.el-menu {
    height: 100vh;
}
.el-main{
    height: 100vh;
}